AES Semigas


23 February 2023

Coherent introduces 1300nm high-power DFB lasers for silicon photonics-based transceivers

Materials, networking and laser technology firm Coherent Corp of Saxonburg, PA, USA has introduced its 1300nm high-power continuous wave (CW) distributed feedback (DFB) laser diodes for silicon photonics-based datacom pluggable transceivers.

Cloud and artificial intelligence (AI) service providers are ramping up deployments of 400G and 800G transceivers for their megascale data-center buildouts, with an eye on 1.6T transceivers in the future. Coherent is introducing high-power CW DFB laser diodes that enable 400G to 1.6T silicon photonics-based transceivers, which are among the transceiver technology platforms deployed in the data-center mid-reach range of 500m to 2km.

“Coherent continues to advance the state of the art in indium phosphide semiconductor laser technology that will enable the cloud to continue to rapidly and sustainably scale capacity,” says Dr Kou-Wei Wang, VP & general manager, Indium Phosphide & Integrated Circuits business unit. “While our new lasers are ideally suited for today’s high-speed silicon photonics-based pluggable transceivers, including our own designs, they are also perfect for future co-packaged optics applications.”

The new lasers achieve 100mW of output power when uncooled and 300mW of output power when cooled, to enable 100Gbps and 200Gbps per lane, respectively, for DR4 and DR8 transceivers. They are available in four coarse wavelength division multiplexing (CWDM) wavelengths for FR4 transceivers.

Coherent is exhibiting in booth #3815 at the Optical Fiber Communication conference (OFC 2023) in San Diego, CA, USA (7–9 March), showcasing its new products and technology for next-generation optical communications networks and sensing.

Tags: Optical communications Laser diodes




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